Born in Toulon 1842, Charles-Marie David, AKA de Mayréna had learned to
know Cochinchina when he was a young soldier in the 1860s. After having had
several activities, he left his wife his children and his job in a bank after
a problem occurred in the bank where he worked (accused of fraud). He went to
Java, but was expelled to Paris by the Netherlands authorities after he had
exploited a Dutch family there.

Having tried to lead an expedition to Aceh (and failed), he went to Saigon,
and, in 1886, he visited the lands of the Jarais, Rongaos, Bahnars and
Sedangs.

Charles de Mayréna proposed to the French governor, Mr. Constans, to do an
expedition in the "moi" lands (moi = savage in annam language). He
went to Qui Nhon, where the French resident, Mr. Lemire, gave him support as
well.

Mayréna personal flag reconstructionimage by Antóonio Martins-Tuvákin
and Jorge Candeias, 22 March 2006
April 21st 1888, he left Qui Nhon with a friend, Alphonse Mercurol, and
with a translator, a cook, 4 Chinese people, 80 coolies, etc. “He bore then
a strange flag, that he presented as his personal standard : blue with three
daisies per bend.”

He arrived first at Kon Jari Tul, a bahnar village where there was a
Catholic mission led by Father Jean-Baptiste Guerlach. He reached thanks to
him Kon Touim, and then Kon Trang, where was the mission of Father Irigoyen.
Thanks to them, he visited several villages, where he cured some people thanks
to quinquina. The Bahnars and Rongaos tribes decided to make him their
"tonul-om" (supreme chief).

Sedang, 1888image by Antóonio Martins-Tuvákin, 22 March 2006
In May 1888, he made an expedition to Sedang (in the Bla valley). On June
1st, he was crowned agna (king) and kedra-begueur sem (master) of the Sedangs,
as "Marie the 1st". Two days later, he wrote a constitution, and
chose “a flag : plain blue, with white cross bearing in its center a red
star”. The motto of his state was "Jamais céder, toujours
d'aidant." He named his capital "Maria Peleď", instituted
customs, postal service, chivalry orders... Mercurol went to Qui Nhon to
announce the foundation of the kingdom, and when he went back there in
September 1888, Charles-Marie de Mayréna was warmly welcomed. He borrowed
money from a Chinese tailor (A. Kong), asked him to make a thousand
uniforms... and fled to Hong Kong, where he tried to sell his kingdom to the
UK, and spent all his money. In Indochina, priests were accused to have wanted
to recreate a new Paraguay, the resident LeMire lost his office, and was
replaced by Guiomar, who went to the Sedang lands to take back the Sedang
flags... Charles de Mayréna went back to Europe, and the Belgian magnate
Somzie was naive enough to decide to help him reconquer his kingdom. But
French authorities did not want him to come back. So, after a stop in
Port-Said where he had converted to Islam, he went to Singapore where he
married with a young Malay woman, settled in Siribua Island. His new wife left
him there, and he went with two friends, Harold Scott and Horace Villeroi, to
Tioman Island, where he died in unclear circumstances in sept. 1890.

The Sedang Kingdom was recreated in Montreal, Canada, in 1995 as a
micronation with Derwin J.K.W. Mak as regent prince, and an assembly whose
president was Mrs. Capucine Plourde. It was a micronation who edited stamps
and sold Sedang titles.Olivier Touzeau, 10 April 2001

The story was reported by H. Calvarin and M. Corbic in Francia Vexillae[frv] #14/60 (June 1999)
on the basis of Fuligni's book [ful97].
Additional information from other sources was given in the paper:

Article 4 of the Constitution mentions a blue flag with a red star, according to the book
Marie Ier, roi des Sedangs by M. Soulie (1927)

image by Antóonio Martins-Tuvákin, and Gvido Petersons, 22 March 2006The fathers involved who joined the David mission reported a light blue flag
with a white cross of Malta, according to Vexilla Belgica[vxb].

image by António Martins-Tuvákin, 22 March 2006
The flag was blue with a white St. George's cross and a red star,
according to K. Fachinger

image by Gene Poole, Wikipedia,
posted 22 March 2006 by António Martins-Tuvákin
The flag was light blue with a red cross of Malta and a white star, or
red with a blue cross of Malta and a white star, according to the
black-and-white photocopy of the cover of the Bulletin des Amis du
Vieux-Hue, #1-2 (January-June 1927) published by J. Marquet.

The writings on the seal mean: Kedra (should be Kodra): Lord; Deh (should
be Dęk): Nation; Begueur (should be Pogor): who rules.Ivan Sache, 11 April 2001